Switch for electric circuits.



B. G. SBAVYIEY & w. a. MILLBN. SWITCH FOR ELECTRIC GIRGUITSL APPLICATION FILED SEPT. 22, 1905.

Illllllllfii'l' m" rlm ulw WITN ESSES l k/xw BY j ADTTORNEY PATENTED NOV. 20, 1906.

UNITED STATES PATENT OFFICE.

BURTON Gr. SEAVEY AND WALTER G. MILLEN, OF KEENE, NEW

HAMPSHIRE.

Specification of Letters Patent.

Patented Nov. 20, 1906.

Application filed September 22, 1905. Serial No. 279,738

T on whom it may concern:

and WVALTER G. MILLEN, citizens of the United States, and residents of Keene, in the county of Cheshire and State of New Hampshire, have invented a new and useful Improvement in Switches for Electric Circuits, of which the following is a specification.

Our invention relates to switch devices for electric circuits and it has for its object to provide a simple, inexpensive, and easilymanipulated device for making and breaking a 1ine-circuit and for establishing temporary short circuits in order to locate and remedy line troubles.

Our invention is primarily designed for use in connection with telephone trunklines; but it is not necessarily limited to telephone serv- 1ce.

In the accompanying drawings, Figure 1 is a plan view of a device that embodies 'our invention, and Fig. 2 is a side elevation of the device shown in Fig. 1.

Our invention may be embodied in a de vice that varies as to structural details from what we have here shown, and we therefore desire it to be understood that specific illustration and description are not to be construed as imposing limitations other than such as are demanded by the prior art.

The base-plate 1 may be the back of a box or casing or other support, upon which are mounted two insulating strips or cleats 2and 3. The cleat or strip 2 is provided with binding-posts 4 and 5, to which line conductors 6 and 7 are respectively soldered or fastened by means of nuts. Projecting inwardly from the binding-posts 4 and are conductingstrips 8 and 9, the inner ends of which are provided with screws 10 and 11, having thumb-nuts 12 and 13. The strip or cleat 3 is provided with binding-posts 14 and 15, to which the ends of line conductors 16 and 17 are respectively fastened by means of solder or nuts.

ing strips 18 and 19, the inner ends of which have screws 20 and 21, on which are mounted thumb-nuts 22 and 23. a

A conducting strip or bar 24 is provided with a longitudinal slot 25 at or near one end to receive the screw 20 and with a side notch 26 at or near its other end to receive the screw 10. A second strip or bar 27 is pro- The binding-posts 14 and 15 are respectively provided with inwardly-project-' .v vided with a longitudinal slot 28 at or near Be it known that we, BURTON G SEAVEY' one end to receive the screw 11 and with a side notch 29 at or near its other end to receive the screw 21.

It will be ,understood from the full-line and broken and dotted line representations of the bars or strips 24 and 27 that the trunk-line may be readily completed or interrupted at will and that the slots and notches facilitate such adjustment as will establish short circuits for the purpose of locating and removing defects.

1. The combination with an electrical circuit each of the conductors of which is interrupted, of a switch having terminal pieces to which the ends of the circuit-conductors are attached, and two conducting-strips pivotally attached to diagonally opposite terminal pieces each of which is adjustable to connect its terminals to either a laterally or a longitudinally opposite terminal piece.

2. The combination with circuit-conductors and terminal pieces attached thereto that are located at the corners of a quadrilateral, of two condiicting-strips that are pivotally attached to diagonally opposite terminal pieces each of which is adjustable to connect its terminal piece to either a laterally or a longitudinally opposite terminal piece.

3. The combination with circuit-conductors and terminal pieces attached thereto and having pins that are located at the corners of a square, of two conducting-strips each of which has a longitudinal slot in one end and a lateral notch in its opposite end, said slots being engaged by diagonally opposite terminal-piece pins, and said strips being adjustable to effect engagement between their notches and either laterally or longitudinally opposite pins.

4. The combination with circuit-conductors and terminal pieces attached thereto and provided with pins that are located approximately at the corners of a square, of two conducting-strips each of which is provided with a longitudinal slot in one end and a notch in its other end, the strips being pivotally secured by means of the slots and pins to diagonally opposite terminal pieces and being adjustable to efiect engagement between their notches and either laterally or longitudinally opposite pins.

5. The combination with circuit-conductors having terminal pieces provided with binding screws and nuts that are located approximately at the corners of a square, of two conducting-strips having end slots to receive diagonally opposite binding-screws and being adjustable to efi'ect engagement of their opposite ends with either laterally or longitudinally opposite binding screws and nuts.

6. The combinationwith the two conductors of an electric circuit, of a switch interposed in said circuit and comprising a base, four terminal blocks to which the ends of the c1rcu1tconductors are attached, two adjustable bars or strips of approximately the same length as the spaces between the inner ends of adjacent terminal blocks and also the spaces between opposite blocks and means for clamping the ends of each of said bars or strips either to adjacent blocks or to opposite blocks in order to change the circuit connections.

In testimony whereof We have hereunto subscribed our names this 26th day of August, 1905.

BURTON G. SEAVEY. WVALTER G. MILL LN. Witnesses:

ALIoE M. ALDRIon, CLARA J. SEAVEY. 

